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cwharpe
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Playing with scripting lately. Is there a way to suspend the execution of a Mecway script mid-way, so that user can mouse-select nodes/faces/elements when prompted?
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Spider Beams tool. Draws Line2 elements from a center Hub (origin) to a selected cloud of nodes. Transition easily from line elements to shells. Save your node budget for areas of interest. Hyper-stiff Spider Beams can approximate behavior of a…
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It just hit me.
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That's a nice bit of analysis, disla. Could you shoot me a copy of your file? Did you say you used the RIGID card? Well, I wanted to see what shapes other software would produce using RBE2 & RBE3 elements. Drug out the old Nastran stuff. Fel…
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Thanks for the feedback. To begin, employing an array of hyper-stiff beam elements, what I've called Spider Beams, is NOT the same as RBE2/RBE3 elements. Those elements use displacement constraint functions in ways I don't fully understand, and …
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Well, the loop part was easy. No limit on nodes.
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@Sergio: Got any programming loops that will draw a line then repeat for, what, the length of the selection set minus one?
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Thanks, Sergio. I need to study your script a bit, but it showed me what I did wrong the first go around. I was extracting the coordinates, but all I needed was the node_id. Plus the syntax on writing the list. Here's version 2. Not robust enou…
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Say, that's a clever trick @disla! Collapsing a shell's edge into it's opposite side -- I've missed that one along the way. Emphasis for the "Create New Component" step in the process that makes the new Line elements around top perimeter (nice set…
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I mean when I'm Copying/Moving parts while building an assembly. Ex.: Laying out a steel staircase, on slope, with shells. Main Stringer meshed with Mecway Auto2D. Multiple step support angles, crossmembers, guardposts, etc., along its slope. Co…
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I'm often wishing the Move/Copy dialog box had the section FROM (node) ==> TO (node). Would save me a lot of cut&paste from the distance dialog box. Added bonus if it were GUI pickable. That said, I am otherwise rather enjoying version 15.
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Hmmmm. Aspect ratio of triangles look a little sharp, but results were comparable to a full quadrilateral model. When modeling shells, I try and use the largest element size possible, then refine from there.
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Only know of creating a Named Selection for the first windowed group, then adding nodes (faces, elements) for the subsequent groups. I often have several Named Selections running to perform Adds or Subtracts and arrive at what I want.
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Very nice set. Thanks JohnM. That Graph Grabber shows a bit more polish than the (free) Engauge Digitizer I've been using.
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@prop_design Thanks. That clears up a few things. Are you also using the CCX folder modify keyword *STATIC ==> Name=SOLVER , Value=PARDISO ?
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Unpacked the files from http://www.dhondt.de/ and was able to get Pastix running by pointing to the ccx_static_i8.exe file from Tools/Options/Calculix/Solver line. Thank You. (What's the difference between static.exe & static_i8.exe?) Pardiso…
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Are there any updates to steps for improving the performance of CCX since the release of Mecway v.15 ? I had upgraded my PC to Windows 10 some time back and got spun around trying to regain Pardiso functionality. Never tried Pastix, but would also…
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@BenDragon81037, Reading Materials: I agree with @MikeMcMullen on the "### for Dummies" or any other summary stuff you can get your hands on, whether online, Youtube, trip to the local library. Examine the worked-out problems, maybe Chaps. 1-3? M…
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@disla, No worries. If it proves accurate enough, was kind of hoping to see it evolve into a Python script for the Mecway API cache. I'm an old Fortran guy, so I would need assistance. The vertical slope/divide by zero "quick patch" was bugging m…
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@disla, Learning something new every day. Never heard of Radial Basis Functions until your post. Looks like the beast. Along the way discovered various geospatial interpolation techniques out there..... But yes, ...Shape functions seem to be the…
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@BenDragon81037, The essence of those "specific terms" you mention can, from time-to-time, give a few of us around here trouble as well . When I read your earlier posts I thought to reference the basic fundamentals in (at least) the following su…
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Great tips, guys! That might qualify for a TED Talk. Just wanted to reference previous mesh parameter tips posted by @disla, @prop_design, @VMH: * http://meshcapades.byethost13.com/netgen_intro.html?i=1 * http ://youtu.be/6amu7J26kqY * htt…
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Nice work, disla! The method employing direction cosines is the proper general approach for 3D space. @StefanH: I see you need to track the X coordinate for your ramp function, which the (Constant) Line Pressure function does not allow (it needs …
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Ha! @Victor beat me to the punch. Couldn't resist getting up for that snack....
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Hope I'm not over-simplifiying your issue, but I've always modeled welded frames like a sandwich. Using Mecway tools, I create the shell footprint of all bottom flanges joined together. Often this begins in the form of several rectangles, and usin…
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Yes, with Plate Mesh transitions from curved to straight, particularly in regions near holes (e.g. lug brackets).
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Also curious how the graphics show the deformed orientation of the joint end faces. One expects a relative angular displacement between faces, but the initial orientation is preserved, thereby distorting the end element of one of the joint members.…
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I agree with the more rigorous application of the constraints. Back in the day with NASTRAN entry software we used as students, you couldn't solve the flagpole-in-compression scenario without first 1) fixing the base rotations or 2) guiding the fre…
